:root{--color-bg: #FAF9F7;--color-bg-subtle: #F5F4F1;--color-surface: #FFFFFF;--color-surface-elevated: #FFFFFF;--color-text-primary: #1C1C1C;--color-text-secondary: #5C5C5C;--color-text-tertiary: #8C8C8C;--color-text-inverse: #FFFFFF;--color-accent: #2D5A5A;--color-accent-hover: #234848;--color-accent-subtle: #E8F0F0;--color-success: #4A7C59;--color-success-bg: #EDF5EF;--color-error: #C75146;--color-error-bg: #FBEAE8;--color-border: #E8E6E3;--color-border-subtle: #F0EEEB;--font-display: "Shippori Mincho", serif;--font-body: "Zen Kaku Gothic New", sans-serif;--font-ui: "DM Sans", sans-serif;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .08);--shadow-xl: 0 20px 50px rgba(0, 0, 0, .1);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Zen Kaku Gothic New,sans-serif;background-color:var(--color-bg);color:var(--color-text-primary);line-height:1.7;min-height:100vh;position:relative}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");opacity:.015;pointer-events:none;z-index:9999}::selection{background-color:var(--color-accent);color:var(--color-text-inverse)}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-subtle);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes waveform{0%,to{transform:scaleY(.5)}50%{transform:scaleY(1)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.app-container{max-width:720px;margin:0 auto;padding:var(--space-xl) var(--space-lg);min-height:100vh;display:flex;flex-direction:column}.header{text-align:center;margin-bottom:var(--space-3xl);padding-top:var(--space-2xl);animation:fadeInUp .6s ease-out}.header__icon{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;background:linear-gradient(135deg,var(--color-accent),#3D6A6A);border-radius:var(--radius-lg);margin-bottom:var(--space-lg);box-shadow:var(--shadow-lg);animation:float 3s ease-in-out infinite}.header__icon svg{width:32px;height:32px;color:#fff}.header__title{font-size:2.25rem;font-weight:500;letter-spacing:.02em;color:var(--color-text-primary);margin-bottom:var(--space-sm)}.header__subtitle{font-size:.95rem;color:var(--color-text-secondary)}.features{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-sm);margin-bottom:var(--space-2xl);animation:fadeIn .6s ease-out .2s both}.feature-badge{display:inline-flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-md);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-full);font-size:.8rem;color:var(--color-text-secondary);transition:all var(--transition-fast)}.feature-badge:hover{border-color:var(--color-accent);color:var(--color-accent)}.feature-badge__icon{font-size:.9em}.card{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-xl);box-shadow:var(--shadow-md);border:1px solid var(--color-border-subtle);margin-bottom:var(--space-lg);animation:fadeInUp .6s ease-out .1s both}.card--result{background:var(--color-success-bg);border-color:transparent;animation:fadeInUp .4s ease-out}.card--error{background:var(--color-error-bg);border-color:transparent;padding:var(--space-md) var(--space-lg);animation:fadeInUp .4s ease-out}.card--progress{background:var(--color-accent-subtle);border-color:transparent;animation:fadeInUp .4s ease-out}.form-group{margin-bottom:var(--space-lg)}.form-group:last-of-type{margin-bottom:var(--space-xl)}.form-label{display:block;font-size:.85rem;font-weight:500;color:var(--color-text-secondary);margin-bottom:var(--space-sm);letter-spacing:.02em}.form-select{width:100%;padding:var(--space-md) var(--space-lg);font-size:1rem;color:var(--color-text-primary);background-color:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235C5C5C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right var(--space-md) center;padding-right:var(--space-2xl)}.form-select:hover{border-color:var(--color-accent)}.form-select:focus{border-color:var(--color-accent);background-color:var(--color-surface)}.form-select:disabled{opacity:.6;cursor:not-allowed}.file-upload{position:relative}.file-upload__dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2xl) var(--space-xl);background:var(--color-bg-subtle);border:2px dashed var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-align:center}.file-upload__dropzone:hover{border-color:var(--color-accent);background:var(--color-accent-subtle)}.file-upload__dropzone--active{border-color:var(--color-accent);background:var(--color-accent-subtle);border-style:solid}.file-upload__dropzone--disabled{opacity:.6;cursor:not-allowed}.file-upload__dropzone--disabled:hover{border-color:var(--color-border);background:var(--color-bg-subtle)}.file-upload__icon{width:28px;height:28px;color:var(--color-text-tertiary);margin-bottom:var(--space-sm);transition:all var(--transition-fast)}.file-upload__dropzone:hover .file-upload__icon{color:var(--color-accent);transform:translateY(-2px)}.file-upload__text{font-size:.95rem;color:var(--color-text-secondary);margin-bottom:var(--space-xs)}.file-upload__hint{font-size:.8rem;color:var(--color-text-tertiary)}.file-upload__input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.file-upload__input:disabled{cursor:not-allowed}.file-info{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg);background:var(--color-accent-subtle);border-radius:var(--radius-md);margin-top:var(--space-md);animation:fadeIn .3s ease-out}.file-info__icon{width:20px;height:20px;color:var(--color-accent);flex-shrink:0}.file-info__details{flex:1;min-width:0}.file-info__name{font-size:.9rem;font-weight:500;color:var(--color-text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-info__size{font-size:.8rem;color:var(--color-text-tertiary)}.file-info__remove{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:transparent;border:none;border-radius:var(--radius-sm);color:var(--color-text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.file-info__remove:hover{background:var(--color-error-bg);color:var(--color-error)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);font-size:1rem;font-weight:600;letter-spacing:.02em;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.btn--primary{width:100%;padding:var(--space-lg) var(--space-xl);background:var(--color-accent);color:var(--color-text-inverse);box-shadow:var(--shadow-sm)}.btn--primary:hover:not(:disabled){background:var(--color-accent-hover);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn--primary:active:not(:disabled){transform:translateY(0)}.btn--primary:disabled{background:var(--color-border);color:var(--color-text-tertiary);cursor:not-allowed;box-shadow:none}.btn--secondary{padding:var(--space-sm) var(--space-md);background:var(--color-surface);color:var(--color-text-primary);border:1px solid var(--color-border);font-size:.9rem}.btn--secondary:hover:not(:disabled){background:var(--color-bg-subtle);border-color:var(--color-accent)}.btn--success{background:var(--color-success);color:var(--color-text-inverse)}.btn--success:hover:not(:disabled){background:#3d6b4a}.device-badge{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);margin-top:var(--space-lg);padding:var(--space-sm) var(--space-md);font-size:.85rem;color:var(--color-text-tertiary);animation:fadeIn .4s ease-out}.device-badge--fast{color:var(--color-success)}.device-badge__icon{font-size:1.1em}.progress{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-lg);color:var(--color-accent)}.progress__spinner{width:24px;height:24px;border:2px solid var(--color-accent-subtle);border-top-color:var(--color-accent);border-radius:50%;animation:spin .8s linear infinite}.progress__waveform{display:flex;align-items:center;gap:3px;height:24px}.progress__waveform-bar{width:3px;height:100%;background:var(--color-accent);border-radius:var(--radius-full);animation:waveform .6s ease-in-out infinite}.progress__waveform-bar:nth-child(1){animation-delay:0ms}.progress__waveform-bar:nth-child(2){animation-delay:.1s}.progress__waveform-bar:nth-child(3){animation-delay:.2s}.progress__waveform-bar:nth-child(4){animation-delay:.3s}.progress__waveform-bar:nth-child(5){animation-delay:.4s}.progress__text{font-size:.95rem;font-weight:500}.error{display:flex;align-items:flex-start;gap:var(--space-sm);color:var(--color-error)}.error__icon{width:18px;height:18px;flex-shrink:0}.error__text{font-size:.95rem;line-height:1.5}.result{padding:var(--space-lg)}.result__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-lg);flex-wrap:wrap;gap:var(--space-md)}.result__title{display:flex;align-items:center;gap:var(--space-sm);font-size:1rem;font-weight:600;color:var(--color-success)}.result__title-icon{width:20px;height:20px}.result__actions{display:flex;gap:var(--space-sm)}.result__text-container{background:var(--color-surface);border-radius:var(--radius-md);padding:var(--space-lg);max-height:400px;overflow-y:auto;box-shadow:inset 0 2px 4px #00000005}.result__text{font-size:1rem;line-height:1.8;color:var(--color-text-primary);white-space:pre-wrap;word-break:break-word}.footer{margin-top:auto;padding-top:var(--space-2xl);text-align:center;animation:fadeIn .6s ease-out .4s both}.footer__text{font-size:.8rem;color:var(--color-text-tertiary);margin-bottom:var(--space-sm)}.footer__links{display:flex;justify-content:center;gap:var(--space-lg)}.footer__link{font-size:.8rem;color:var(--color-text-tertiary);text-decoration:none;transition:color var(--transition-fast)}.footer__link:hover{color:var(--color-accent)}@media(max-width:640px){.app-container{padding:var(--space-lg) var(--space-md)}.header{margin-bottom:var(--space-2xl);padding-top:var(--space-lg)}.header__title{font-size:1.75rem}.card{padding:var(--space-lg)}.file-upload__dropzone{padding:var(--space-xl) var(--space-lg)}.result__header{flex-direction:column;align-items:flex-start}.result__actions{width:100%}.result__actions .btn{flex:1}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}